Automatic sterilizing instrument-case.



F. C. DUDLEY.

AUTOMATIC STERILIZING INSTRUMENT CASE.

Patented Oct. 8, 1918;

APPLICATION FILED JAN-31.19.

y PM, w

affozneq AUTOMATIC STERILIZING INSTRUMENT-CASE.

Specification of Letters Patent.

Patented Oct. refs.

Application filed January 31, 1917. Serial No. 145,595.

To all whom it may concern:

Be it known that I, FRANK C. DUDLEY,

a citizen of the United States, residing at- .and useful Improvements inAutomatic sterilizing Instrument-Cases, of which the following is aspecification.

My invention has relation to improvements in the casing of surgicalinstruments as hypodermic syringes or clinical thermometers, and theobject of the invention is to provide suitable means for immersing theinstrument on syringe in an antiseptic solution in connection with aspring valve action within the casing. With these ends in view theinvention consists in the novel construc-. tion and combination of theseveral parts as will be hereinafter more in detail described and theasserted novelty specifically claimed.

I have fully and clearly illustrated my invention in theaccompanyingdrawings in which,

Figure 1 represents a sectional elevation showing the spring depressedin the casing and the needle of. a hypodermic syringe lowered.

Fig. 2 represents the valve spring located in the lower part of thecasing, also a filling-of lambs wool or similar material in a relaxedposition. Fig. 3 is a detail View.

Referring more in detail to the drawings, A designates a casing ofpeculiar construction comprising a long tubular section, having windowsa and a shorter section of glass tubing a, the latter telescoping withinthe former.

B designates a coiled spring located nearmaterial preferably lambs-woollocated in the lower portion of the longer section a of the casing andin which a spring valve action is produced conjointly with thelambswool, a solution, and spring E designates a short slidable tube,one and the lower end of this tube is seated on the upper end of thespring B, supporting the lambs-wool and said. tube being operated by theaforesaid spring. When the casing is filled with two drams of antisepticsolution as 70 per cent. of alcohol this solution, when the spring ispressed down as shown in Fig. 1, comes up above the porous material oflambs-wool, and when thesyringe is removed the spring raises thelambs-wool up and creates a suction which draws allof the solutionbelow, making or performing a-spring valve action, as hereinbeforestated, so that the solution will not leak out even if the casing isinverted, or positioned in any manner. This spring valve action I deemas of the first importance as it can be used in thermometers and allother instruments of a like character to which it may be adapted, and itis desired to be understood that I do not confine myself to hypodermicsyringes per se, but, as previously stated, all other instruments of alike character.

The shorter section or cap of the casing may be conveniently placed onthe opposite. end of the case, if desired. The syringe can be carried inthe pocket, and is always sterile and readyv for use.

What I claim as new'and desire to secure by letters patent, is:

The combination with a sectional casing I of a coil spring mounted inthe lower portion thereof, wool or like substance mounted on the upperend of the spring and a tube resting on and compressing the wool whenthe tube is depressed by inserting a syringe within the sectionalcasing.

In'testimony whereof I aifix my signature in the presence of twowitnesses.

FRANK C. DUDLEY. Witnesses: I

GERARD R. KERN, -RUTH N. 'JUBELT.

